215results about How to "Stable service" patented technology

A non-virtual server and a virtual server make up the same tenant in an environment, in which virtual servers created by dividing a single physical server into a plurality of computer environments coexist with a non-virtual server that directly uses a single physical server as a computer environment without using server virtualization. A management computer is provided with virtual switch management information that shows a correlation between the virtual servers and an internal network to which a relevant virtual server connects, and physical switch management information that shows a correlation between the non-virtual server and an internal network to which the non-virtual server connects. The management computer creates a virtual server that belongs to the same tenant as a physical instance, identifies a first internal network to which the non-virtual server connects, and configures the tenant so that the relevant virtual server is connected to the first internal network.

A network interworking system is provided for connecting a voice call between a mobile terminal in a wireless packet network and a mobile terminal in a mobile communication network. A home location register (HLR) registers therein location information of terminals and a subscriber profile. An access point controller (APC) converts data between the mobile communication network and the wireless packet network upon receipt of an origination message including a terminal identifier of a called terminal, and transmits a call connection request to the called terminal. A mobile switching center (MSC) detects a location of the called terminal through the HLR upon receipt of the call connection request from the APC, and transmits a paging message to the detected location of the called terminal. A base station system (BSS) transmits the paging message from the MSC in the mobile communication network to the called terminal.

A dual mode mobile terminal has a dual mode in which said mobile terminal can be connected to any of two different wireless communications systems (hereinafter referred to as systems 1 and 2). The mobile terminal can be connected to optimum wireless communications system by considering conditions at which the mobile terminal is (moving speed, communication data rate) even if it is in the state of communicating using any of systems 1 and 2. The mobile terminal (3) which can be connected to any of the system 1 having a wide service area and medium and low communication data rate and the system 2 having a local service area and high communication data rate determines whether or not it is in the service area of the systems 1 and 2. Based upon the moving speed and / or the communication data rate of the current mobile terminal (3), the mobile terminal (3) is connected to the system 1 or 2 if the moving speed is higher or lower than a predetermined threshold, respectively, and is connected to the system 2 or 1 if the communication data rate is higher or lower than a predetermined threshold, respectively, irrespective of whether the mobile terminal is in the communicating state or not. Prior to connection, selection of the wireless system is informed to the user and the connection may be made in accordance with an instruction from the user.

The present invention relates to a method for controlling hand-over in a drone network. A method for controlling hand-over in a drone network that is established by a plurality of drones that constitute a formation, and controlled by a ground control station (GCS) that controls the location, configuration and mobility of each of the plurality of drones according to the present invention includes a phase via which the GCS predicts, based on previously stored control information, a drone that is to be newly deployed or transferred from another formation and allocates network connection information to the drone thus predicted; a phase via which the GCS generates a virtual routing table including the drone that is thus predicted to be deployed or transferred; a phase via which the GCS, upon actual deploying or transferring the predicted drone, changes the virtual routing table into an actual routing table; and a phase via which the GCS, upon the drone thus deployed or transferred transmitting a control message of the formation routing protocol, calibrates and optimizes the routing table.

The invention discloses a method for fast constructing Hadoop cluster based on container cloud technology. The method comprises the following steps: (1) determining selected physical server number according to actual demand, regarding the entire selected physical server as a cluster, and assigning a master node of the cluster, and distributing actual deployment nodes, namely as the slave node; (2) installing a CentOS7 operation system for each physical server in the cluster; (3) installing and starting a container orchestration service Kubernetes and the network service Flannel on each master node of the cluster by use of a yuminstall command; (4) installing MySQL database, a mirror image warehouse service and management portal; (5) logging a management portal interface by use of an administrator account, establishing a user; and logging the management user by use of the established user, creating the cluster environment of the user, and constructing a Hadoop cluster.

The invention discloses an alliance chain-based decentralized CA construction method and system, which is a set of complete CA service block chain process and design scheme, and comprises a CA chain initialization method, a consensus strategy and an anti-cheating strategy; and modification of certificate information is converted to be in a block chain transaction form and recorded in an unmodifiable public account book for members to look up. According to the alliance chain system applying a CA chain, provided by the invention, corresponding business work and alliance chain maintenance work are finished by calling services provided by a CA certificate management block chain module, a block chain service module and an intelligent contract module, so that the CA decentralization operation ofan alliance chain is realized, and the centralization threat possibly faced by the alliance chain containing centralized CA services is eliminated.

There is proposed a mechanism for controlling a communication connection of a user equipment in a communication network. The communication network comprises at least a core network subsystem having at least one core network control element, and a first access network subsystem and at least a second access network subsystem. On one hand, when it is detected that at least one connection parameter of a communication connection of the user equipment can not be maintained by the first access network subsystem, a connection modification message is sent to the core network control element. The core network control element responds with an acknowledgement message the acknowledgement message comprising an instruction parameter for instructing that the communication connection of the user equipment is to be changed to the second access network subsystem being determined to having the capability to provide the connection parameter. On the other hand, when a change of a communication connection of the user equipment from the first access network subsystem to the second access network subsystem is to be performed, it is checked whether or not the cell change is executable. On the basis of the result of the checking step, a message is sent to the core network control element comprising an information element about the execution of the change of the access network subsystem.

In a method in which a first UE supports V2X communication of a second UE in a wireless communication system, the method comprises: a step of receiving a first request message, for requesting mapping information with respect to the V2X service, from the second UE; a step of transmitting a second request message, for requesting the mapping information, to a V2X control function; a step of receiving a second response message, comprising the mapping information, from the V2X control function; and a step of creating a first response message comprising the received mapping information and transmitting the first response message to the second UE.

A packet congestion control technique employs an Active Flow Random Early Drop (AFRED) method to provide a service requiring a predetermined bandwidth with a stable Quality of Service (QoS) even when network congestion occurs. The packet congestion control technique includes: receiving at least one packet flow; defining identifiers for the received at least one packet flow; numbering each of the defined at least one packet flow; calculating a queue length of each of the at least one packet flow; allocating a maximum queue threshold value, a minimum queue threshold value, and a maximum probability value of each of the at least one packet flow; and dropping or accepting an incoming packet of a flow according to the calculated packet drop probability upon a queue length of a currently received packet being between the maximum queue threshold value and the minimum queue threshold value.

A network routing method for preventing packet drop or loss comprises the steps of presetting best and second routes for the same destination, determining a route for an inputted packet with reference to the preset best and second routes, selectively queuing the inputted packet to respective output queues of the preset best and second routes in accordance with whether there is congestion in the output queues of the preset best and second routes, and sequentially queuing the packets stored in the output queues of the preset best and second routes, and transporting same to output ports of corresponding routes, in accordance with an order of input thereof. A network routing apparatus comprises a forwarding table, a forwarding section, a queue management section, and a transport section for use in performing functions corresponding to the above steps.

A method of a cell reselection performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving supreme priority information from a target cell, the supreme priority information indicating whether a deprioritization is applied; applying the supreme priority information, if the supreme priority information indicates that the deprioritization is applied; and performing a cell reselection based on the applied deprioritization.

Disclosed is an apparatus and method for recovering a communication link between a Mobile Station (MS) and a Base Station System (BSS) in a mobile communication system when the communication link is disconnected while a communication service is in progress. When detecting the disconnection, the MS stores information of the communication link. If the MS acquires synchronization with the BSS within a predetermined time period from the detection, it resumes the communication service through the communication link. Upon the disconnection, the BSS stores resource and other information of the MS. If the BSS detects that the MS has acquired synchronization with the BSS within the predetermined time period from the disconnection, the BSS resumes the communication service through the communication link. This ensures a stable communication service in a mobile communication system that has many radio dead zones where the MS cannot normally receive services.

The invention relates to a foam diamond reinforced paraffin phase change energy storage material and a preparation method of the foam diamond reinforced paraffin phase change energy storage material. The phase change energy storage material comprises a surface reinforced foam framework, paraffin, a fire retardant and a paraffin support material; and a surface reinforcing layer of the foam framework is chosen from one of a diamond film, a graphene wall, a carbon nano tube wall, a graphene coated diamond film, a carbon nano tube coated diamond film, and a carbon nano tube / graphene coated diamond film. The phase change energy storage material is reasonable in structure, high in heat conductivity coefficient and stable in performance; and graphene or / and the carbon nano tube is / are modified on the surface, so that the heat conducting property of the foam framework is further improved, and the heat transfer efficiency of the existing energy storage material is effectively improved. The excellent chemical inertness of the diamond effectively avoids the corrosion of a metal framework in the phase change material, the prepared foam framework is not only suitable for the organic phase change energy storage material, is but also strongly compatible with and adaptive to the inorganic hydrous salt phase change material, and the phase change energy storage material is applied in the high-temperature high-power high-energy-consumption field.

The present invention relates to a method for operating a motor vehicle internal combustion engine having a controller for adjusting NOx emissions in the exhaust gas, wherein a NOx controller is combined with a combustion controller. A control unit of an internal combustion engine is further proposed, said control unit comprising first control means for performing cylinder pressure-based combustion control, and second control means for performing NOx control, wherein the first and second control means are linked to each other.

The invention provides an architecture of elastic cloud. The architecture of elastic cloud comprises a cloud resource control end, an internal network, a storage device, a reverse proxy server, an external network and a server cluster, wherein the cloud resource control end, the internal network and the storage device are connected in sequence, the reverse proxy server and the external network are connected in sequence, the cloud resource control end is connected with the reverse proxy server, a software provider has access to the cloud resource control end, virtual machine images and configuration files are uploaded and are stored in the storage device by the cloud resource control end through the internal network, virtual machines are registered in the server cluster and instantiated, and the configuration files of the reverse server are modified. According to the architecture of elastic cloud, by monitoring the virtual machines running in elastic cloud, service in the elastic loud is guaranteed to be always in the healthy state according to the load dynamic flexible service capacity of the virtual machines, and it is guaranteed that after the server cluster changes, a user request can not be sent to the service virtual machines which do not exist any more.

The invention discloses a method and a system for controlling an Internet-of-things device based on a block chain. The method comprises the following steps: registering the Internet-of-things device on an Internet-of-things platform through the equipment gateway; transmitting a device control instruction by a user through the Internet-of-things platform; calling the block chain service by the Internet-of-things platform, interacting with the intelligent contract through the block chain service, and calling the corresponding interface of the intelligent contract; triggering a contract event corresponding to the device control instruction by the intelligent contract; after monitoring the contract event, judging how to process the device control instruction according to the content in the contract event. The invention provides a method and a system for controlling device on the Internet-of-things based on a block chain. By realizing the scheme of combining the block chain with the Internet-of-things, the invention ensures the management and control of the control authority of the equipment, the tamper-proof operation record and the interconnection among the equipment, and realizes thedecentralization of the mode of issuing the equipment instruction, the service is more stable and the usability is higher.

The invention provides a dual-computer hot standby method based on a quorum diskmechanism. The dual-computer hot standby method based on the quorum disk mechanism is used for achieving backups of a plurality of servers. The servers compete with one another to obtain the right of control over an quorum area of a storage node, the server which successfully obtains the right of control over the quorum area becomes an active server, and the other servers are set to be backup servers. The active server updates a heartbeat value regularly, and the backup servers read the heartbeat value regularly. If the heartbeat value is not changed in a time period, it is determined that the active server is halted, the backup servers compete with one another again to obtain the right of control over the quorum area, and then a new active server is determined. The dual-computer hot standby method based on the quorum disk mechanism can accurately judge the working state of the active server, avoid misjudgment and the brain laceration situation, and ensure service continuity.

The invention discloses a multisource internet resource device based on meta search engine, and a method thereof. The device is provided with a user unit, an overlay network unit, a search unit and a downloading unit, all the units or software are deployed at the client terminal to complete all the downloading operation at the client terminal so as to weaken dependence of existing downloading devices on central server or multimedia search database, and fully utilize development of meta search engine to perform downloading application of internet. The device fully utilizes meta search engine of internet to position and discover file source address, performs multi-address search of the same resource to a target file, and perform parallel downloading and merging to the target resource by the multisource downloading technology, thus utilizing development of various search engines, improving accuracy of search results, and providing more fast and stable downloading service by utilizing the multisource downloading technology. Moreover, the resource addresses and search are set based on users, thus meeting personalized demand of users.

A packet data analyzer on a mobile communication network for analyzing packet data traffic, monitoring services, generating billing information per data service, and monitoring the network based on a protocol analysis, comprises a packet data separator provided between one of a mobile communication exchange and a packet controller that provide a wireless data service to the subscriber, and the service server, for separating user packet data transmitted between one of the mobile communication exchange and the packet controller and the service server, and receiving the user packet data; a traffic analyzer for separating the user packet data received through the packet data separator according to transmission directions, and analyzing the user packet data; a statistics storage unit for storing and managing result data analyzed by the traffic analyzer; and a statistics reference unit for retrieving data stored in the statistics storage unit, and providing statistical information desired by the user.

A device and method for playing back scalable video streams. The device for playing back a scalable video stream includes a screen mode determination unit that determines the mode of a screen to be displayed, a decoding level determination unit that determines a decoding level according to the screen mode, a predecoder that provides a signal to be decoded in accordance with the decoding level, a decoder that decodes the signal provided by the predecoder, and a display unit that displays the decoded signal. The method includes judging the mode of a screen to be displayed, determining a decoding level suitable for the mode of the screen, performing predecoding in order to provide a signal to be decoded according to the decoding level, decoding the signal provided by the predecoder, and displaying the decoded signal for playback.

The invention discloses an electric system key equipment actualizing-one-prepared method and system based on a network. The electric system key equipment actualizing-one-prepared system comprises a plurality of nodes, one of the multiple nodes is the main node, other nodes are the child nodes, the nodes are in communication through the network, and the states of the nodes include the main state, the voting state and the auxiliary state. The main node maintains the global state of a bus and manages the child nodes through a node state list and a node priority list. According to the electric system key equipment actualizing-one-prepared method and system, the main node is dynamically generated through voting, when the child nodes find that the main node loses efficacy, a voting mechanism will be trigged, and therefore the new main node is generated. By means of the voting mechanism of the electric system key equipment actualizing-one-prepared method and system, it can be guaranteed that the scheme is accurate and reliable.

The invention relates to an intelligent terminal application system based on network structure, which at least comprises one local network with intelligent terminal, access network, and fireproof wall; the first server area with several different server groups while each group has at least one server with different functions, and the first server area has authorization domain analysis server; network load balancer connected to the fireproof wall and the first server area, to select one of minimum-load server to connect the intelligent terminal, according to the requested server group and the load of server.

A system and method for relaying Multicast Broadcast Service (MBS) are provided. The system for relaying MBS includes a base station; and a plurality of relay stations, wherein the relay stations forms multi-hop relay network, and wherein the base station selects a Modulation and Coding Scheme (MCS) level among a plurality of MCS levels based on channel condition between the base station and the respective relay stations. The MBS relay system of the present invention provides improved data throughput and stable broadcast services.

A dual mode mobile terminal has a dual mode in which said mobile terminal can be connected to any of two different wireless communications systems (hereinafter referred to as systems 1 and 2). The mobile terminal can be connected to optimum wireless communications system by considering conditions at which the mobile terminal is (moving speed, communication data rate) even if it is in the state of communicating using any of systems 1 and 2. The mobile terminal (3) which can be connected to any of the system 1 having a wide service area and medium and low communication data rate and the system 2 having a local service area and high communication data rate determines whether or not it is in the service area of the systems 1 and 2. Based upon the moving speed and / or the communication data rate of the current mobile terminal (3), the mobile terminal (3) is connected to the system 1 or 2 if the moving speed is higher or lower than a predetermined threshold, respectively, and is connected to the system 2 or 1 if the communication data rate is higher or lower than a predetermined threshold, respectively, irrespective of whether the mobile terminal is in the communicating state or not. Prior to connection, selection of the wireless system is informed to the user and the connection may be made in accordance with an instruction from the user.

The invention discloses a wireless hotspot sharing method. For a mobile terminal comprising two WiFi antennas, and connected with two wireless hotspots via the two WiFi antennas, when a wireless hotspot sharing command is detected, any one of the two wireless hotspots is shared based on any WiFi antenna of the two WiFi antennas, and when a flow acquisition request is detected, the condition that whether a shared flow value in the acquisition request is in a preset flow section is judged, and if the shared flow value is in the preset flow section, flow of any one of the two wireless hotspots are continuously shared; and if the shared flow value is not in the preset flow section, the flow of the two wireless hotspots are shared after overlapping. The invention also discloses a mobile terminal and a computer readable storage medium. According to the method provided by the invention, wireless hotspot sharing based on the WiFi hotspots is achieved, and switching between the single wirelesshotspot sharing and dual-wireless-hotspot sharing is achieved via the flow required by current sharing.

The invention relates to a ZrC-TiC modified C / C-SiC composite material and a preparation method thereof, belonging to the technical field of preparation of composite materials. The composite material disclosed by the invention comprises carbon fibers, a pyrolytic carbon layer, SiC and ZrC-TiC, wherein the pyrolytic carbon layer coats the surface of the carbon fibers; SiC and ZrC-TiC coat the surface of the pyrolytic carbon layer; and ZrC-TiC is uniformly distributed in SiC. The preparation method comprises the following steps: preparing a low-density C / C composite material by adopting chemical vapor infiltration; melting Si, Zr and Ti powder, infiltrating the powder into the C / C composite material by virtue of a capillary action, and forming a ceramic phase in pores by virtue of a high-temperature in-situ reaction, thereby obtaining the ZrC-TiC modified C / C-SiC composite material. With the adoption of the process method which is low in cost, rapid and convenient, the service temperature of the C / C-SiC composite material is effectively improved, and the ultra-high temperature ablation resistance of the material is greatly enhanced.

A cell configuration method and system and a channel allocation method for the system are disclosed for minimizing the influence of intercell interference between cells in a mobile communication system capable of providing a mobile subscriber with a stable communication service, by determining a number of safety channels to be assigned to each of the plurality of cells, and providing the adjacent cells around the serving cell with at least one additional shared safety channel other than the safety channel originally assigned to the each cell.

A method of a cell reselection performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving supreme priority information from a target cell, the supreme priority information indicating whether a deprioritization is applied; applying the supreme priority information, if the supreme priority information indicates that the deprioritization is applied; and performing a cell reselection based on the applied deprioritization.

A method for processing and transmitting data packet is disclosed. The method includes receiving a data packet with a first Redundancy Version (RV) from a serving cell, receiving a data packet with a second RV different from the first RV from a collaborative cell, and combining and decoding the data packets received from the serving cell and the collaborative cell.

The invention relates to a system for achieving a safety audit. The system comprises a plurality of clients, a plurality of servers and a safety audit device. The invention further relates to a safety audit method. The method includes the steps that service request messages are sent to the safety audit device by the clients; the safety audit device forwards the service request messages to the servers corresponding to the service request messages, and a service request message mirror image is copied so that a corresponding mirror image file can be obtained; the safety audit device analyzes the mirror image file so that corresponding service operation instructions can be obtained; the servers respond to the service request messages and send corresponding service operation logs to the safety audit device; the safety audit device compares and analyzes the service operation instructions and the service operation logs. The system for achieving the safety audit has the functions of double-machine hot standby and cluster deployment, is easy to popularize, stable and reliable, supports dynamic expansion and has a wider application range.